Add and correctly find erlang bottle.

Library/Homebrew/bottles.rb

@@ -22,8 +22,6 @@ def built_bottle? f
 end
 
 def bottle_current? f
-  puts Pathname.new(f.bottle_url).version
-  puts f.version
   f.bottle_url && f.bottle_sha1 && Pathname.new(f.bottle_url).version == f.version
 end
 

Library/Homebrew/extend/pathname.rb

@@ -213,8 +213,10 @@ class Pathname
     return $1 if $1
 
     # eg. foobar4.5.1
+    unless /^erlang-/.match basename
       /((\d+\.)*\d+)$/.match stem
       return $1 if $1
+    end
 
     # eg foobar-4.5.0-bin
     /-((\d+\.)+\d+[abc]?)[-._](bin|dist|stable|src|sources?)$/.match stem